(Delphi DLL) OneDrive -- Streaming File Upload

See more OneDrive Examples

Uploads a local file by path to the signed-in user's OneDrive. This uses OneDrive's simple upload API to upload in a single API call. Uploading in this way only supports files up to 4MB in size. The 4MB limitation is a OneDrive limitation, not a Chilkat limitation. (See the other example(s) for uploading larger files.)

Note: This example requires Chilkat v9.5.0.97 or greater.

For more information, see https://docs.microsoft.com/en-us/onedrive/developer/rest-api/api/driveitem_put_content?view=odsp-graph-online

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpRequest, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
json: HCkJsonObject;
http: HCkHttp;
req: HCkHttpRequest;
resp: HCkHttpResponse;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example uses the OAuth client credentials flow.
// See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

// Use your client ID, client secret, and tenant ID in the following lines
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'client_id','2871da2c-8176-4b7f-869b-2311aa82e743');
CkJsonObject_UpdateString(json,'client_secret','2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH');
CkJsonObject_UpdateString(json,'scope','https://graph.microsoft.com/.default');
CkJsonObject_UpdateString(json,'token_endpoint','https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token');

http := CkHttp_Create();
CkHttp_putAuthToken(http,CkJsonObject__emit(json));

// To upload in a single HTTP request, send a PUT request such as the following:

// 	PUT /v1.0/users/{$user-id}/drive/root:/{item-path}:/content
// 	Content-type: text/plain
// 	Content-Length: <the actual content length>
// 
// 	The contents of the file goes here.

// Note: This example can upload any type of file.
// Chilkat automatically adds the Content-Length header.

req := CkHttpRequest_Create();
CkHttpRequest_putHttpVerb(req,'PUT');
// Use your actual user-id instead of "4fe732c3-322e-4a6b-b729-2fd1eb5c6104"
CkHttpRequest_putPath(req,'/v1.0/users/4fe732c3-322e-4a6b-b729-2fd1eb5c6104/drive/root:/TestDir/penguins.jpg:/content');
// Indicate the local file to be streamed in the upload.
CkHttpRequest_StreamBodyFromFile(req,'qa_data/jpg/penguins.jpg');
// If you're uploading a file and don't know what the Content-Type should be,
// just use "application/octet-stream".  See below for an example..
CkHttpRequest_putContentType(req,'image/jpeg');

resp := CkHttp_SynchronousRequest(http,'graph.microsoft.com',443,True,req);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// If successful, a 201 status code is returned, with the driveItem object in the response body for the newly created file.
CkJsonObject_putEmitCompact(json,False);
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));

if (CkHttpResponse_getStatusCode(resp) <> 201) then
  begin

    // Here is an example of an error:

    // 		{
    // 		  "error": {
    // 		    "code": "nameAlreadyExists",
    // 		    "message": "An item with the same name already exists under the parent",
    // 		    "innerError": {
    // 		      "request-id": "22302ba5-b885-4b67-9e20-8f6801aec372",
    // 		      "date": "2017-06-03T14:22:27"
    // 		    }
    // 		  }
    // 		}
    // 
    // 		Response status = 409

    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Response status = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
    CkHttpResponse_Dispose(resp);
    Exit;
  end;

CkHttpResponse_Dispose(resp);

// Success.  Examine the driveItem JSON object:
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('-- Success --');

// Here is a sample successful response:

// 	{
// 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/root/$entity",
// 	  "@microsoft.graph.downloadUrl": "https://s5ucmg.dm2301.livefilestore.com/y4p0MT4NGBshn3EMBjrq8NuU3c_3Bt4DBz0BjZiQPNhiCDj3DjXEHrMr71M6wAGRrvT6WJmPIqNo_lxBP4Uen5MXFVtO3Dz_tdZ531hC_J9fb-eU6CoEmvjonwapmTorJb6hbi6g8VNxBQLItDyVgWM-InmxoNRo0N6xpcAuIbKZccN5vuctIs-Wqxefaza19thlu__bOl8kfG_SkgsrbBzKdTjOS0phBhIi8kYo9wG25k",
// 	  "createdBy": {
// 	    "application": {
// 	      "displayName": "Chilkat",
// 	      "id": "441c9990"
// 	    },
// 	    "user": {
// 	      "displayName": "Matt Smith",
// 	      "id": "3a33fceb9b74cc15"
// 	    }
// 	  },
// 	  "createdDateTime": "2017-06-03T14:23:52.153Z",
// 	  "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjMuMjU3",
// 	  "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODYzLjA",
// 	  "id": "3A33FCEB9B74CC15!4863",
// 	  "lastModifiedBy": {
// 	    "application": {
// 	      "displayName": "Chilkat",
// 	      "id": "441c9990"
// 	    },
// 	    "user": {
// 	      "displayName": "Matt Smith",
// 	      "id": "3a33fceb9b74cc15"
// 	    }
// 	  },
// 	  "lastModifiedDateTime": "2017-06-03T14:23:52.153Z",
// 	  "name": "penguins.jpg",
// 	  "parentReference": {
// 	    "driveId": "3a33fceb9b74cc15",
// 	    "id": "3A33FCEB9B74CC15!4862",
// 	    "name": "someFolder",
// 	    "path": "/drive/root:/someFolder"
// 	  },
// 	  "size": 777835,
// 	  "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pX8",
// 	  "file": {
// 	    "hashes": {
// 	      "sha1Hash": "DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0"
// 	    },
// 	    "mimeType": "image/jpeg",
// 	    "processingMetadata": true
// 	  },
// 	  "fileSystemInfo": {
// 	    "createdDateTime": "2017-06-03T14:23:52.153Z",
// 	    "lastModifiedDateTime": "2017-06-03T14:23:52.153Z"
// 	  }
// 	}

// ------------------------------------------------------------------------------------
// Now let's upload some file where we don't know what the Content-Type should be.
// 
// In this case, we're uploading the same JPG file but instead of providing "image/jpeg" for the
// Content-Type, we provide "application/octet-stream".  ("application/octet-stream" is the general
// HTTP content-type used for anything unkown.  "octet" is a synonym for "byte".  It's just a way of
// saying: Here's a stream of bytes that comprise the file.)

// Also, you'll notice in the successful JSON response (below), that Microsoft automatically
// detected the Content-Type as "image/jpeg", because the mimeType is set as such.
// It is likely Microsoft set the MIME type (i.e. Content-Type) based on the file extension, or even better
// it may have determined the MIME type by examining the initial bytes of the file to find the standard 
// identifying markers that signify common file types such as PDF, JPG, ZIP, and many more.

// In a nutshell:  Don't worry about setting the ContentType precisely. If you know it, great.  If not, just
// use "application/octet-stream".

CkHttpRequest_putHttpVerb(req,'PUT');
// Use your actual user-id instead of "4fe732c3-322e-4a6b-b729-2fd1eb5c6104"
CkHttpRequest_putPath(req,'/v1.0/users/4fe732c3-322e-4a6b-b729-2fd1eb5c6104/drive/root:/TestDir/penguins2.jpg:/content');
CkHttpRequest_StreamBodyFromFile(req,'qa_data/jpg/penguins.jpg');
CkHttpRequest_putContentType(req,'application/octet-stream');

resp := CkHttp_SynchronousRequest(http,'graph.microsoft.com',443,True,req);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
if (CkHttpResponse_getStatusCode(resp) <> 201) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Response status = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
    CkHttpResponse_Dispose(resp);
    Exit;
  end;
CkHttpResponse_Dispose(resp);

// Success.  Examine the driveItem JSON object:
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('-- Success --');

// 	{
// 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/root/$entity",
// 	  "@microsoft.graph.downloadUrl": "https://s5ucmg.dm2301.livefilestore.com/y4pKX-VIcxZfOUa1iYzGo7K4dX8an2xkcL7i-bb1YLE2ralUEPAixycWzekSn6-lUl5ojvZLQzpce45pgX2SIZfHe9l9scGcYu1viPHxKQ67Xh5b6iMhQNwbjbPQdr3ez6DET55DL25f7kS-fnksazALBtHiTLYayEqMc3WokdQYPsCj7AtzyNPzgKh6ye9R0FxM6ZRS5y6ARY23dIWuGkAKE9lKLgC4PPjvgNBBvl7zi8",
// 	  "createdBy": {
// 	    "application": {
// 	      "displayName": "Chilkat",
// 	      "id": "441c9990"
// 	    },
// 	    "user": {
// 	      "displayName": "Matt Smith",
// 	      "id": "3a33fceb9b74cc15"
// 	    }
// 	  },
// 	  "createdDateTime": "2017-06-03T14:30:22.017Z",
// 	  "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjUuMjU3",
// 	  "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODY1LjA",
// 	  "id": "3A33FCEB9B74CC15!4865",
// 	  "lastModifiedBy": {
// 	    "application": {
// 	      "displayName": "Chilkat",
// 	      "id": "441c9990"
// 	    },
// 	    "user": {
// 	      "displayName": "Matt Smith",
// 	      "id": "3a33fceb9b74cc15"
// 	    }
// 	  },
// 	  "lastModifiedDateTime": "2017-06-03T14:30:22.017Z",
// 	  "name": "penguins2.jpg",
// 	  "parentReference": {
// 	    "driveId": "3a33fceb9b74cc15",
// 	    "id": "3A33FCEB9B74CC15!4862",
// 	    "name": "someFolder",
// 	    "path": "/drive/root:/someFolder"
// 	  },
// 	  "size": 777835,
// 	  "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pgE",
// 	  "file": {
// 	    "hashes": {
// 	      "sha1Hash": "DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0"
// 	    },
// 	    "mimeType": "image/jpeg",
// 	    "processingMetadata": true
// 	  },
// 	  "fileSystemInfo": {
// 	    "createdDateTime": "2017-06-03T14:30:22.016Z",
// 	    "lastModifiedDateTime": "2017-06-03T14:30:22.016Z"
// 	  }
// 	}

CkJsonObject_Dispose(json);
CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);

end;